Percolator.



FATENTED 06?. 1', 1.907.

APPLIUATIFIK FILED JAE. 22,1997.

WITNESSES INVENTOR.

I W4 TTORNEI.

UNITED STATES PATENT OFFICE.

JOHN F. IVES, OF'Nl3W BRITAIN GONNECTICUT.

rnncons'ron.

vented a new and Improved Percolator, of which the i following is a specification.

My invention relates more especially to the class of receptacles used for preparing coffee in liquid form, and more especially to that class of receptacles in which the liquid is allowed to percolate through the Coffee, which is usually contained in a basket or like part, and the object of my invention. is to provide a device for. making coffee for drinking purposes that shall be extremely pure and free from injurious ingredients; and a'further object of the invention is to provide a device in which the coffee may he quickly prepared andone which shall not require extreme care to insure its successful operation. 4

invention. Fig. 4 is a detail view on enlarged scale illustrating the form of the mixer.

In the accompanying drawings the numeral 5 denotes the receptacle or pot which may be constructed in any desired form and of proper material and having a handle 6, top 7, and spout 8.

A heating base or foot 9 is'secured to thebottom of the pot. This foot may be of any desired form and composed of any desired material and of such size as l to properly perform the work required of it. In the form shown this foot is round and slightly smaller than projects through an opening in the bottom of the pot the'bottom of the pot. This base or foot serves as a conductor for the heat to the liquid within the tube, in the form of device herein shown a portion ofthe heat beingconducted by the lower end of a central tube to be hereinafter described, although the form of connection of tube and base herein shown is not absolutely essential to the embodiment of my invention.

. It is joined to the'pot as by a neck 10, thus leaving a space llbetween the bottom of the pot and the greater portion of the upper surface of the foot. The neck 10 to the interior thereof and is threaded for the reception of a nut 13 located within the pot and by means of which the-base is held securely in place. Washers 14-'l5, one located without and the other within the .pot and closely surrounding the neck, are employed to partially insulate the body of the pot from the heat the bottom oi thepot through which the neck extends.

Speeificationof'Letters Patent. Application filed January 22, 1907. Serial No 353,468.

The plate -9 has a chamber 16 into which a central Patented Oct. 15, 1907.

tube 17 extends, the tube being secured to the base as by means of interengaging, screw-threaded parts. This tube has ports 18-19 opening through its side walls,

one set toward the bottom of the tube and the other set nearer the top.

A jacket 20 surrounds this inner or central tube, providing a chamber 21. Ports 22 extend through the wall of the jacket near the bottom opening underneath .a hood 23 secured to the jacket and having a mouth 24 at its lowerend. Y

. A basket 25 is supported by the tube 17 and a cap 26 on the upper end of the tube may direct the flow of fluid onto the coffee held in the basket 25.

It has been demonstrated that in the method of preparing coffee where the ground coffee is subjected to the action of boiling water, injurious ingredients are extracted from the. coffee. By the use ofthe device above described boiling water is prevented from com.- ing in contact with the coffee held in the basket 25. The water Within the pot.5 is not heated to the boiling point, but the water within the tube and in the chamber 16 in the foot 9 is heated. to such point. As the force generated by this heated liquid causes an upward fiow through the tube, the cooler liquid from the pot 5 is also drawn in through the ports 22. 18 and 19 and carried upward, the hotter liquid being tempered so that when it is ejected at the top of the tube it is not of a V temperature to injure the coffee within the basket, or

extract injurious ingredients therefrom.

' The hood 23 prevents the force within the tube 17 from ejecting the liquid'through the ports 18 and 22, which occurs under some conditions, as when the liquid is comparatively shallow within the pot.

, It has been demonstrated by experiment that when excessive heat is applied to the foot or base 9, I with the pot in a vertical position, the liquid will, not

be forced upward through the inner tube. This will not occur under ordinary conditions, but in order to guard against careless us'e'of the pot and the subjecting of the plate to an over amount of heat I introduce'a -mixer 27 at the bottom ofth tube 7 or within the chamber 16. mixer is preferably tubular in form with a reduced opening 28 at the top and a flange 29 having radial grooves 30 at. the bottom. By the use of this mixer the device will operate under any condition of heat which may be applied to the base.

While I prefer to form the chamber 16 partially through the base 9 and secure the tube 17 therein, other forms of heating chamber may be provided. As shown in Fig. 2 the base 31 has an opening 32 extended entirely through it and the tube 33 is closed at the bottom as at 34. The results, however, in operation are 5 practically the same as those hereinbefore noted. of the plateor foot, and also to pack the opening in within the pot. If, however, it shall be desiredto use I dy anqllailtity of liqui 'trthin the pot a construction 3: shown inIfig. 3 oi the drawings may be employed. construction the inner tube'kio is Contracted as at producing a smallerchannelA2e1itending to, the

top of the tubes Thejouter tube 43 'is also contracted a ter-near the samepoint, the upper part of the cham- -ber between thetubes being thus reduced in size, as

i Q What I claim as my invention and desire to secure by 1', Letters Patent is:-'

1. A. receptacle, :1 eatending upward therein, -a basket located onsaid'tube' near its upper end, said tube having openings tbroughmitswall above and below said -basket. a jacket surrounding said tube and having an openmg: through its wall neur'the lower end thereof,-and a -conductor fol-conveying heat to liquid within said'tube.

..-'2.=A. receptacle, 9. tube -extending..upward therein, a basket located on the tube near its upper end, said tube -having' openings through its ,wall above and below said 2'0; basket,- a jacket surrounding-said tube and having an opening through its wall; a hood surwundingthe opening in the jacket, and a eoiiductor for-conveying beat to liquid within said tube. v

3, receptacle, a tube projectingupward therein. a basketloc'ated on. the tube near its-upper end, said tube having openings through. its wall above and below said basket, a jacket extending from a point near the-bottom or the tube to a point near said basket and closed at its ends and havlng an, opening through its wall near-the lower 7 'end, and a conductor for conveying heat to liquid within said tube. I

" LEA. receptacle. a tube extebding upward therein. a

basket located on the. tube'nearf its upper end. said tiibe having openings through its. wall above and. below the 3-5 basket; a jacket extending from a point near the lower end 40 conductor for conveying heat to liquidwithin the tube.

tube near its' upper end s'aid tube'fhavln'g openings through its wall abovefa'nd below said: baskehand a jacket surrounding said. tube and having an opening through its well. v

6.-A receptacle, aheatingplate secured-to the bottom of the receptacle and having a-chalnber therein, a tube projectin'g from said chamber upward within the receptacle. a basket located on, the tube. near its upper end, said tube having openings above and below said, basket. a jacket surrounding said tube and having an opening through its wall,

and a hood surrounding'sald opening.

7. A receptacle, a beating 'piateremovably secured to the bottom of 'the receptacle and having a chamber, a tube projecting upward from said heating plate and within the some? 1 receptacle, a basket located on the tube near its upper end,

said-tube having openings above and below said basket, and ajacket surrounding said tube and having an opening through its wall.

A receptacle. a heatingplate removably secured to the bottom thereof and having a chamber, a tube projecting. upward from said chamber within the receptacle and removably secured to said plate, a basket located near the upper end of the tube, said tube having openings through its wall above and below said basket, and a jacket surrounding said tube and having an opening through its wall.

9. A receptacle, a tube extendingupward within the receptacle and reduced in size at its upper end, a basket located on the tube near its upper end, said tube having openings through its wall above and below said basket, a jacket surrounding said tube and having an. opening throu'gh its wall, and a conductor for conveying heat.to liquid within said tube.

10. A receptacle, a tube extending. upward therein and contracted at its upper end, a basket located on the tube near its upper end, said tube having openings through its wall above and below said basket, a jacket contracted at its upper end and surrounding said tube and having an opening through its wall, and a conductor for conveying heat to liquid within the tube.

11. A receptacle, a tube extendihgupward therein, av .basket located on the tube near its upperv end, said tube having an outlet opening above and an inlet opening up derneath said basket, a jacket surrounding said tube and having an opening through its wall into the chamber be-' tween the two tubes, and a conductor for conveying heat.

to liquid within the tube.

12. A receptacle, 9. tube extending upward therein and having an inlet opening and an outlet opening; a jacket surrounding said tube and having an opening through its wall into the chamber between the two tubes, a conductor for conveying heat to liquid within one of said tubls, and a basket located near the upper end of said tubes.

13. A receptacle, atube extending upward therein and having an! inlet and an outlet opening, a conductor for conveying heat to liquid within said tube, a basket located 0n the, tube near its upper end, and a mixer consisting of apart loosely resting at the bottom of the 'tube.

14. 'A receptacle. a tube extending upward within the receptacle, and havingan inlet and an outlet opening, a

conductor for conveying heat to liquid within 'said tube, a basket located on the tube near its upper end, and a mixer consisting of a tubular part looselyresting at the bottom of the tube.

15. A receptacle, a tube extending upward thereinand having an inlet and outlet opening, a conductor for conveying beat to liquid within the tube, a basket-located near the upper end ot the tube, and a mixer consisting of a tubular part loosely resting at the bottom of the tube and having grooves in its bottom for the entrance of liquid.

JOHN F. IVES.

Witnesses ARTHUR B. JENKINS, ALBERT C; Bin. 

